Well, you should hope it's something physical that can be fixed. I've had ten years of pain from a period of excess computer use which, so far as my neurologist could work out, was induced by extreme stress. No physically-detectable signs at all. Luckily, it's nowhere near as bad as it was - though it's hurting now, because I'm thinking about it. Best of Luck.
10/11/11 at 12:38pm